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my method "abc" return array of interface "xyz" and "pqr" is abstract class implements abc and class "jkl" extends pqr My problem 1) when i call abc it retrun array xyz how can i do this hint xyz refer_xyz = new jkl(); but i can't create array. 2)I want to access method of jkl using reference of xyz??
1 3840StringBuilder s = new StringBuilder("Hello Mom");s.append(",I mean,Mother"); Response.Write(s.ToString()); String s = "Hello Mom"; s+ = ",I mean Mom"; Response.Write(s); Which is faster ? which uses the most memory?
HCL,
6 8760I have one Shopping cart application, i that i have selected some items, while clicking submit button by mistake i have clicked twice or trice, that time items are selected twice or trice. Actually i want only one copy of items but its selected twice or trice. So how can we avoid this problem?
2 6702Hai all I want to print given array in reverse order Ex: int a[]={1,2,3,4,5};display this array in reverse order.
4 5912How to find the size of an array a)array.length() b)array.length c)array.size() d)array.size
6 10786when a servlet sends request for first time it uses the follwing methods a)init b)doget() c)dopost() d)service
4 7373I have 100 records in a table with two rows. I need to display 10 records per page like Google Search. I need only the Logic(Pagination) in Pure Java. No JSP and all..Thanks in Advance...
2 7905
what is thread in Java ?
What are the 6 functions?
What is the purpose of the system class in java?
when to use ArrayList and when to use HashMap in webApplication.
Compare Mutex and Semaphore in java.
What is the main purpose of java?
What are the advantages of exception handling?
What is java objectoutputstream?
whatis Home interface and Remoteinterface? with example?
Explain the difference between intermediate and terminal operations in java8?
Can static methods be inherited?
what is meant by HQL?
Can extern variables be initialized?
What is sortedmap interface?
Say you want to store the information about a number of pets in an array. Typical information that you could store for each pet (where relevant) would be • Breed of animal • Animal's name • Its birth date • Its sex • Whether it has been sterilised or not • When it is due for its next inoculation • When it last had its wings clipped For each type of pet (eg. dog, cat or bird) you would typically define a class to hold the relevant data. Note: You do not need to implement these classes. Just answer the following questions. 3.1.1 What would be the advantage of creating a superclass (eg. Pet) and declaring an array of Pet objects over simply using an array of Objects, storing each of the instances of the different pet classes (eg. Dog, Cat or Bird) in it? 3.1.2 Would you define Pet as a class or as an interface? Why? (2) (2)
